<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>vue计数器</title>
    </head>
    <body>
        <div id="app">
            <h2>当前计数：{{counter}}</h2>
            <button v-on:click="add">+</button>
            <button v-on:click="sub">-</button>
        </div>
    </body>
    <script src="../js/vue.js"></script>
    <script>
        var app = new Vue({
            el:'#app',
            data: {
                counter:0
            },
            methods: {
                add: function(){
                    this.counter++
                },
                sub: function(){
                    this.counter--
                }
            }
        })
    </script>
</html>